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Running Pace & Race Time Calculator

Convert distance and elapsed time into pace per kilometer, average speed and proportional race times.

Enable JavaScript to use the interactive tool. Instructions and examples are available below.

A LITTLE GUIDANCE

Running Pace & Race Time Calculator guide

Estimate times for other distances by assuming the same average pace is maintained throughout.

How to use

  1. Enter the distance in kilometers.
  2. Enter elapsed hours, minutes and seconds.
  3. Review pace, average speed and proportional times for common race distances.

Worked example

Input
Enter a distance of 5 km and an elapsed time of 30 minutes.
Result
Pace is 6 minutes per kilometer and average speed is 10 km/h. At that pace, 10 km takes one hour.

Common questions

Does the estimated time predict an actual race result?

No. It is a direct distance-to-time proportion. Fatigue, elevation, weather and stops are not included.

Which half-marathon and marathon distances are used?

The distances are 21.0975 km and 42.195 km respectively, with the same average speed assumed throughout.